GEO
Communications
Intelsat 23
Hybrid C-band and Ku-band Commercial Communications Satellite for Intelsat
FACTS AT A GLANCE
Mission Description
Orbital built the Intelsat 23 (IS-23) GEO communications satellite for Intelsat. IS-23 generates
4.8 kilowatts of electrical payload power and carries 15 active Ku-band and 24 active C-band
transponders. The spacecraft provides communications services for the Americas, the Caribbean,
Western Europe, Africa and selected islands of the Pacic and Atlantic oceans. Designed for a useful
life of at least 15 years, the IS-23 satellite is located in orbit at 307 degrees East Longitude, and is the
10th Orbital-built geosynchronous communications satellite in the Intelsat eet.
GEOStar™ Satellites for Intelsat
Intelsat 23 is one of ten Orbital GEOStar communications satellites ordered by Intelsat.
• Galaxy 12
• Galaxy 14
• Galaxy 15
• Horizons-2
• Intelsat 11
• Intelsat 15
• Intelsat 16
• Intelsat 18
• Intelsat 23
• Intelsat 28
Coverage:
The Americas, the Caribbean, Western
Europe, Africa and selected islands of
the Pacic and Atlantic oceans
Mission:
C- and Ku-band communications
Customer:
Intelsat
Intelsat 23 in Orbital's Dulles, Virginia satellite
manufacturing facility
Intelsat 23
Specications
Spacecraft
Launch Mass: 3,200 kg (7,055 lb.)
Solar Arrays: Four panels per array, UTJ Gallium
Arsenide cells
Stabilization: 3-axis stabilized; zero momentum system
Propulsion: Liquid bi-propellant transfer orbit system;
monopropellant (hydrazine) on-orbit system
Batteries: Two >4840 W-Hr capacity Li-Ion batteries
Mission Life: 15 years
Orbit: 307° East Longitude
Hybrid Payload
C-band
Repeater: 24 active transponders with two groups of
16-for-12 redundant TWTAs
Antenna: 2.5 x 2.7 m single shell super-elliptical
deployable reector; 1.3 x 1.65 m single
shell super-elliptical deck-mounted
Ku-band
Repeater: 15 active transponders with 19-for-15
TWTAs
Antenna: 2.5 x 2.7 m single shell super-elliptical
deployable reector
Launch
Launch Vehicle: Proton
Site: Baikonur, Kazakhstan
Date: October 14, 2012
Coverage Contour Maps
C-band Coverage Areas Ku-band Coverage Areas
Eastern Hemisphere 3.7 GHz
Western Hemisphere 3.7 GHz
Eastern Hemisphere 5.925 GHz
F1 11.7 GHz HP
F2 11.7 GHz HP
F1 14.0 GHz HP
Mission Partners
Intelsat
Intelsat is a premier global provider of video and data services
via satellite
Orbital Sciences Corporation
Prime contractor for Galaxy 12, 14 and 15; Intelsat 11, 15, 16, 18, 23
and 28; Horizons-2 for an Intelsat/SKY Perfect JSAT joint venture
International Launch Services
Launch provider
Orbital Sciences Corporation
45101 Warp Drive
©2014 Orbital Sciences Corporation FS004_09_2998
•
Dulles, Virginia 20166
•
www.orbital.com
Western Hemisphere 5.925 GHz
F2 14.0 GHz HP
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